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公开(公告)号：US06197244B1
公开(公告)日：2001-03-06
申请号：US09096556
申请日：1998-06-12
申请人： Livio Buongiorno , Ray E. Patrick , Luca Cerani , Paolo Ciocca , Roberto Forloni
发明人： Livio Buongiorno , Ray E. Patrick , Luca Cerani , Paolo Ciocca , Roberto Forloni
IPC分类号： B29C3510
CPC分类号： B32B27/08 , B29C55/023 , B29K2023/0625 , B29K2023/083 , B29K2023/086 , B32B27/32 , B32B38/0008 , B32B2038/0028 , B32B2307/518 , B32B2307/7244 , B32B2307/736 , B32B2323/10 , B32B2439/70 , C08L23/02 , Y10S428/91 , Y10T428/1328 , Y10T428/2495 , Y10T428/2918 , Y10T428/31913 , Y10T428/3192 , Y10T428/31928 , C08L2666/04 , C08L2666/24
摘要： A method of making the a multilayer, biaxially oriented, heat shrinkable thermoplastic film includes a layer having between 50 and 100 parts by weight ethylene/alpha-olefin C4-C12 copolymer, and between 0 and 50 parts by weight of a polymer selected from polyolefin, and modified polyolefin, the layer having more than one melting point when detected by diffential scanning calorimetry according to ASTM D-3418; wherein the total thickness variation in the multilayer film is lower than ±10%.
摘要翻译： 一种制备多层双轴取向的热收缩热塑性薄膜的方法包括具有50-100重量份乙烯/α-烯烃C4-C12共聚物的层和0-50重量份选自聚烯烃 和改性聚烯烃，当根据ASTM D-3418通过差示扫描量热法检测时，该层具有多于一个熔点; 其中多层膜中的总厚度变化小于±10％。
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2.发明授权
公开(公告)号：US6106934A
公开(公告)日：2000-08-22
申请号：US646366
申请日：1996-08-02
申请人： Livio Buongiorno , Ray E. Patrick , Luca Cerani , Paolo Ciocca , Roberto Forloni
发明人： Livio Buongiorno , Ray E. Patrick , Luca Cerani , Paolo Ciocca , Roberto Forloni
CPC分类号： C08L23/02 , B29C55/023 , B32B27/32 , B29K2023/0625 , B29K2023/083 , B29K2023/086 , Y10S428/91 , Y10T428/1328 , Y10T428/2495 , Y10T428/2918 , Y10T428/31913 , Y10T428/3192 , Y10T428/31928
摘要： A multilayer, biaxially oriented, heat shrinkable thermoplastic film includes a layer having between 50 and 100 parts by weight ethylene/alpha-olefin C.sub.4 -C.sub.12 copolymer, and between 0 and 50 parts by weight of a polymer selected from polyolefin, and modified polyolefin, the layer having more than one melting point when detected by diffential scanning calorimetry according to ASTM D-3418; wherein the total thickness variation in the multilayer film is lower than .+-.10%, and wherein the average deviation of the multilayer film from a straight line is lower than .+-.40 mm, and wherein the sag average of the multilayer film is lower than 25 mm. A method of making the film, and a package made with the film, are also disclosed.
摘要翻译： PCT No.PCT / EP94 / 03589 371日期：1996年8月2日 102（e）日期1996年8月2日PCT 1994年10月28日PCT公布。 WO95 / 13187 PCT出版物 日期1995年5月18日多层双轴取向热收缩热塑性薄膜包括具有50-100重量份乙烯/α-烯烃C4-C12共聚物的层和0-50重量份选自聚烯烃， 和改性聚烯烃，当根据ASTM D-3418通过差示扫描量热法检测时，该层具有多于一个熔点; 其中所述多层膜中的总厚度变化小于+/- 10％，并且其中所述多层膜与直线的平均偏差小于+/- 40mm，并且其中所述多层膜的下垂平均值为 低于25毫米。 还公开了制造薄膜的方法以及由薄膜制成的封装。
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公开(公告)号：US06488972B1
公开(公告)日：2002-12-03
申请号：US09214819
申请日：1999-01-25
申请人： Luca Cerani
发明人： Luca Cerani
IPC分类号： A23L1315
摘要： A hermetically sealed package comprises an substantially rigid base(3; 22), preferably a tray, a product (2; 23) to be packaged, which in a preferred embodiment is higher than the tray side walls (5), supported on the tray (3; 22), and a stretch film (8; 15) welded to the substantially rigid base (3; 22) along a sealing line so as to form a hermetically sealed enclosure for the product. In a method and a machine for manufacturing a hermetically sealed package (1; 101) a stretch film (8; 15) is stretched by means of a stretching frame (17) against a base (3; 22) along a pressure line and is heat welded by means of a sealing frame (18) to the base (3; 22) along a sealing line so as to form a hermetically sealed enclosure for a product (2; 23). (FIG. 4)
摘要翻译： 密封的包装包括基本上刚性的基部（3; 22），优选地托盘，待包装的产品（2; 23），其在优选实施例中高于支撑在托盘上的托盘侧壁（5） （3; 22）和沿着密封线焊接到基本上刚性的基部（3; 22）的拉伸膜（8; 15），以形成用于产品的气密密封的外壳。在制造方法和制造机 通过拉伸框架（17）沿着压力线将紧固膜（1; 101）拉伸到基部（3; 22）上，并通过密封框架 （18）连接到基座（3; 22）上，以形成用于产品（2; 23）的气密密封的外壳。 （图4）
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